package com.mmd.mybatis;

import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.InjectionConfig;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.po.TableInfo;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.VelocityTemplateEngine;
import org.apache.commons.lang3.StringUtils;
import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import java.util.StringJoiner;
public class CodeGenerator {

    /**
     * <p>
     * 读取控制台内容
     * </p>
     */
    public static String scanner(String tip) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("请输入" + tip + "：");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (StringUtils.isNotBlank(ipt)) {
                return ipt;
            }
        }
        throw new MybatisPlusException("请输入正确的" + tip + "！");
    }

    public static void main(String[] args) throws SQLException {
        // 代码生成器
        AutoGenerator mpg = new AutoGenerator();

        // 全局配置
        GlobalConfig gc = new GlobalConfig();
        gc.setOutputDir(com.mmd.mybatis.config.CodeGeneratorConfig.outputDir);
        gc.setOpen(false);
        gc.setSwagger2(true); // 实体属性 Swagger2 注解
        mpg.setGlobalConfig(gc);

        // 数据源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl(com.mmd.mybatis.config.CodeGeneratorConfig.jdbcUrl);
        dsc.setDriverName(com.mmd.mybatis.config.CodeGeneratorConfig.driverName);
        dsc.setUsername(com.mmd.mybatis.config.CodeGeneratorConfig.username);
        dsc.setPassword(com.mmd.mybatis.config.CodeGeneratorConfig.password);
        mpg.setDataSource(dsc);

        // 包配置
        PackageConfig pc = new PackageConfig();
        pc.setParent(com.mmd.mybatis.config.CodeGeneratorConfig.outputPackage);
        pc.setEntity(com.mmd.mybatis.config.CodeGeneratorConfig.entityPackageName);
        pc.setMapper(com.mmd.mybatis.config.CodeGeneratorConfig.mapperPackageName);
        pc.setController(com.mmd.mybatis.config.CodeGeneratorConfig.controllerPackageName);
        pc.setModuleName(com.mmd.mybatis.config.CodeGeneratorConfig.parentModelName);
        pc.setService(com.mmd.mybatis.config.CodeGeneratorConfig.servicePackageName);
        pc.setServiceImpl(com.mmd.mybatis.config.CodeGeneratorConfig.serviceImplPackageName);

        mpg.setPackageInfo(pc);

        // 自定义配置
        InjectionConfig cfg = new InjectionConfig() {
            @Override
            public void initMap() {
                // to do nothing
            }
        };

        // 如果模板引擎是 velocity
        String templatePath = "/templates/mapper.xml.vm";

        // 自定义输出配置
        List<FileOutConfig> focList = new ArrayList<>();
        // 自定义配置会被优先输出
        focList.add(new FileOutConfig(templatePath) {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输出文件名 ， 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化！！
                return com.mmd.mybatis.config.CodeGeneratorConfig.outputResourcesDir + pc.getMapper()
                        + "/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
            }
        });

        cfg.setFileOutConfigList(focList);
        mpg.setCfg(cfg);

        // 配置模板
        TemplateConfig templateConfig = new TemplateConfig();
        templateConfig.setXml(null);
        mpg.setTemplate(templateConfig);

        // 策略配置
        StrategyConfig strategy = new StrategyConfig();
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);
        // strategy.setSuperEntityClass("你自己的父类实体,没有就不用设置!");
        strategy.setEntityLombokModel(true);
        strategy.setRestControllerStyle(true);
        // 公共父类
        // strategy.setSuperControllerClass("你自己的父类控制器,没有就不用设置!");
        // 写于父类中的公共字段
        /*strategy.setSuperEntityColumns("id");*/
        String scanner = scanner("自动生成代码请输入true,手动生成代码请输入false");
        if(scanner.equals("true")){
            StringJoiner stringJoiner = new StringJoiner(",");
            try(Connection conn = dsc.getConn()){
                try(Statement statement = conn.createStatement()){
                    try(ResultSet resultSet = statement.executeQuery(com.mmd.mybatis.config.CodeGeneratorConfig.tables)){
                        while (resultSet.next()) {
                            stringJoiner.add(resultSet.getString("table_name"));
                        }
                    }
                }
            }
            strategy.setInclude(stringJoiner.toString().split(","));
        }else{
            strategy.setInclude(scanner("表名，多个英文逗号分割").split(","));
        }
        strategy.setControllerMappingHyphenStyle(true);
        strategy.setTablePrefix(com.mmd.mybatis.config.CodeGeneratorConfig.prefix);
        mpg.setStrategy(strategy);
        mpg.setTemplateEngine(new VelocityTemplateEngine());
        mpg.execute();
    }
}
